Perforator



(No-MM) H. G. MILLER;

PERFORATOR.

No. 545,711. Patented Sept. 3, 1 895.

E1 A I):

; W/TNE S S: Maggi/Z;

' zmw 4 ATTORNEYS.

NITED STATES PATENT OFFICE.

HORACE G. MILLER, OF PUNXATAWNEY, PENNSYLVANIA.

PERFO RATO R.

SPECIFICATION forming part of Letters Patent No. 545,711, datedSeptember 3, 1895. Application an April 23,1895. Serial No. 546.933.(NombdeL) To all whomt't may concern.-

Be it known that I, HORACE G. MILLER, of Punxatawney, in the county of Jeflerson and State of Pennsylvania, have invented certain new and usefulImprovements in Perforators, of which the following is a'full, clear,and exact description.

My invention relates to a perforator adapted for attachment to thegripper-bar of a printing-press, so as to be operated simultaneouslywith the gripper.

The object of my invention is to provide a device of the above-indicatedclass which will be simple and durable in construction, which inoperation will be comparatively rigid and so arranged as not tointerfere with the clearness of the impression, and which will bereadily adjustable to perforate the paper at the exact place desired.

To these ends my invention consists of certain features of constructionand combinations of parts, that will be fully described hereinafter, andpointed out in the claims.

Reference is to be had to the accompanying drawings, in which Figure 1is a front elevation of the improved perforator in position on thegripper-bar, the ends of the latter being broken away. Fig. 2 is a planthereof, with part in section, on the line 2 2 of Fig. 1. Fig. 3 is anenlarged broken-sectional view on line 3 3 of Fig. 1. Fig. 4 is across-section taken on line 4 4 of Fig. 3. Fig. 5 is a cross-section online 5 5 of Fig. 1.

Like letters of reference denote like parts in all the views.

A is the gripper-bar of the printing-press, and it may be supported andoperated in the usual manner. To the said gripper-bar is secured so asto move in unison therewith an upright B, which, as shown, is formedwith a longitudinal slideway B, preferably of dovetail formation. Thisslideway is adapted to receive a series of perforator sections or knives0. Each of these sections comprises a base or projection C, of a shapecorresponding to that of the slideway B and adapted to enter the same,(see Figs. 4c and 5,) and a.

blade 0 which has tapering sides Cidiverging toward the base 0 andterminating. short of the outer edge of the said base, so as to leaveonthe base, at each side of the blade, a

shoulder 0 which is parallel, or approximately so, to the plane of thepaper. The blade (3 has a serrated edge 0 to produce the perforations inthe paper.-

Sundry of the knife-sections are provided 7 with reduced ends, as shownat O. in Fig. 3. .The purpose of this construction is to allow thecentral base portion D of slides D to enter the slideway B by passingunder the said reduced end 0 The slides D, as shown in Figs. 3 and 4,consist of a central base portion D, which, as described, engages theslideway B, and

flanges D projecting laterally over the up- I right B at each side ofits slideway. To the outer surface of the slide is secured a plate E,formed with two spring-arms E, extending longitudinally ateach side ofthe slideway B and normally projecting beyond the serrated edge ofthe'perforator-blade C The outer surface of the plate E preferably isarranged flush with the inner ends of theserrations in the blade for apurpose presently to be stated. The spring members E" are of a curvedshape, as will beseen best in Fig. 3. It will be understood that theknife-sections O and the slides D, with the springs E, are adj ustablelongitudinally of the upright B, and may be held in position afteradjustment by any suitable means, such as a pin F. (See Fig. 1.) It isnot necessary that all' the sections C should be provided withperforatingblades 0 and blank slides G that is, slides withoutperforating-bladesmay be used to fill that part of the slideway B atwhich no perforating action is desired. Sections of different lengthsmay be employed. (See Fig. 1.)

In order to produce a line or lines of perforations in a directiondifferent from that of the upright B, I provide the side arms G, (one Ior more of them,) arranged at an angle to'the said upright and mountedto slide'thereon. As illustrated in Fig. 2, .the connection between theupright B and the side arms G is similar to that of the upright with thespringcarrying slides D, the side arms being provided with integralprojections G adapted to enter the slideway B and to'pass under areduced end portion O of a slide 0, so that the blade 0 of the saidslidemay extend across the side arm. (See Fig. 1.) The side arms areconstructed similarly to the upright B with dovetail slots G and areprovided with longitudinal slideways G, adapted to receiveperforator-sections 0, blank sections (3, and spring-carrying slides D.

The peculiar connection between the side arms G and the upright B is avery firm one, so as to prevent the side arms from wabbling and thejoints from becoming loose. In some cases, however, it may be desirableto provide an additional support for the free ends of the side arms,and, as illustrated in Fig. 1, such support may be in the nature of anupright H, formed with beveled edges H and adapted to be embraced by theends of the side arms G, the latter being provided for this purpose Theupright H therefore constitutes a guide on which the side arms aremounted to slide.

The manner in which the perforator is operated and adjusted will beobvious without further explanation. A very clear impression can beobtained when employing myimproved perforator, while other devicesconstructed hitherto for the same purpose very often prevent efiectivecontact of the paper with the form, and thus cause a defectiveimpression. The blade 0 being located centrally, or approximately so, inrelation to the base 0', is very firmly supported,and therefore will notbend laterally during the perforating operation. The paper will notadhere to the perforator, but will readily separate therefrom. This isdue, first, to the particular arrangement of the springs E, which arelocated at each side of the blade 0 so that they will lift the paper offthe blade in a direction perpendicular to the plane of the paper.

I am aware that it has been proposed to use springs in connection withperforators for the purpose of releasing the paper; but such springswere to be arranged only on one side of the perforator and obviouslywould produce a lateral strain on the paper and could not be relied uponto disengage the paper from the perforator. Another feature whichfacilitates the ready removal of the paper from the perforator is thepeculiar construction of the knives. As hereinbefore described, theplate E forms a stop for the paper, the outer surface of the said plate,as described, being flush with the inner ends of the notches between theteeth of the perforator. The paper therefore cannot be torn by the bladeentering into it to a greater depth than the height of the teeth orserrations. The shoulders C from the top of the base of theperforator-sections are flush with the surface of the standard B. Byextending the base portion laterally a wide channel or groove may bemade in the part B to receive it, so that the perforator has a widesurface-bearing, which will prevent its rocking relatively to the support.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A perforator, comprising a supporting bar, aperforating knife extended lengthwise of the bar and mounted to slidethereon, and a paper-releasing spring likewise extended lengthwise ofthe bar and mounted to slide on the supporting bar, substantially asdescribed.

2. A perforator, comprising a supportingbar provided with a longitudinalslideway, a perforating knife arranged to move upon the said slideway,and provided with an end portion spaced from the said slideway, and apaper-releasing spring provided with a slide fitting into the spacebetween the supporting bar and the said spaced end of the knife,substantially as described.

3. A perforator, comprising a supporting bar provided with alongitudinal grooveforming a slideway, a perforating knife provided witha projection arranged to move upon the said slideway, and with a reducedend portion spaced from the slideway, and a paper-releasing springprovided with a slide fitting into the slideway under the reduced end ofthe knife, substantially as described! 4. A perforator, comprising asupporting bar provided with a longitudinal slideway, a perforatingknife arranged to move upon the said slideway, and provided with an endportion spaced from the said slideway, and a side arm adapted to carryperforating knives and provided with a portion fittinginto the spacebetween the supporting bar and the said spaced end of the knife,substantially as described.

5. A perforator, comprising a supporting bar provided with alongitudinal groove forming a slideway, a perforating knife providedwith a projection arranged to move upon the said slideway, and with areduced end portion spaced from the slideway, and a side arm adapted tocarry perforating knives and provided with a portion fitting into thegroove under the reduced end of the knife, substantially as described.

HORACE G. MILLER. Witnesses:

EDGAR MoRRow, F. M. TORRENCE.

ICO

